.divbig{
    margin: 0px;
    padding: 0px;
    width: 400px;
    height: 500px;
    margin: auto;
    top: 50px;
    position: relative;/*相对定位（相对于整个body定位）*/
}
.div1{
    width: 396px;
    height: 50px;
    text-align: center;
}
#img1{
    width: 50px;
    height: 50px;
}
.div2{
    width:396px;
    height: 50px;
}
.div3{
    width:396px;
    height: 50px;
    text-align: center;
}
#mi1{
     width: 300px;
     height:50px;
     font-size:30px;
}
.div4{
    width: 396px;
     height:320px;
     margin-top: 20px;
}
.table1{
    font-size: 17px;
}
.fontdiv4{
    width: 333px;
    height: 39px;
    float: left;
    border: 1px solid gray;
    line-height: 39px;
}
.imgdiv4{
    width: 34px;
    height: 29px;
    border: 1px solid gray;
    float: left;
    padding-left: 15px;
    padding-top: 10px;
    cursor: pointer;
}
.spandiv4{
    width: 380px;
    height: 40px;
    float: left;
    color: gray;
    font-size: 15px;
}
#tu1{
    font-size: 20px;
}
.font2div4{
    width: 50px;
    height: 33px;
    border: 1px solid grey;
    float: left;
    padding-top: 6px;
}
.table3div{
    width: 340px;
    height: 50px;
    float: left;
}
.table3{
    width: 330px;
    height: 35px;
}
#cys{
    height: 30px;
    width: 350px;
    float: left;
}
#mi2{
    width: 380px;
    height: 40px;
    background-color: darkorange;
    color: white;	
    cursor: pointer;
    border: none;
    margin-top: 5px;
}	
.font{
    width: 383px;
    height: 240px;
    border: 2px solid gainsboro;
    overflow: scroll;/*溢出标签*/
    position: absolute;/*绝对定位（父级div定位）*/
    top: 235px;
    display: none;/*隐藏div*/
    background-color: white;
    color: darkslategrey;
}
ul{
    list-style: none;
    padding: 0;
    margin: 0;
}
ul li{
    height: 40px;
    border-bottom:1px solid grey;
    line-height: 40px;
}
li:hover{
    background-color: lightgrey;
}
#A{
    background-color: #FF8C00;
    color: crimson;
    height: 30px;
    line-height: 30px;
}